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gail gas limited - GAIL Tenders

Jul 7, 2011 ... 21.1. Introduction. 447. 21.2. General Observations. 448. 21.3. X-rays and the Hot Universe. 449. 21.4. The Apotheosis of Astrometry: GAIA. 450. 21.5 ...... ?TD/T0 ? 10. ?3 ? v/c, where v is the velocity of the observer. After subtracting the Earth's motion around the Sun, and the Sun's motion around the ...



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